anybody have any info regarding roadstone roadian ht tyres?

my company just installed them on my 4x4 and i have very little confidence in them.

btw reading post on the 1st page alot of people was bantering about the michelin certis saying it lacks grip and so forth. but i have no trouble with it but bear in mind that my car is less then 950kg in weight including the driver.

i guess the that tyre can really show it's merit if the car is light and setup properly. will be getting them till they are not in stock anymore. i just love them.

the replacement is the xm1 i think. any reviews on the replacement?